[1] Univ British Columbia, Dept Dermatol & Skin Sci, Photomed Inst, Vancouver Costal Hlth Res Inst, Vancouver, BC V5Z 4E8, Canada
[2] King Saud Bin Abdulaziz Univ Hlth Sci, King Fahad Natl Guard Hosp, Dept Med, Div Dermatol, King Abdulaziz Med City, Riyadh, Saudi Arabia
[3] Univ British Columbia, Dept Pathol & Lab Med, Vancouver, BC V5Z 4E8, Canada
[4] Vancouver Gen Hosp, Vancouver, BC, Canada